I understand how to display a dictionaries sorted content by means of obtaining allKeys into an NSMutableArray, sorting the array and using it as an index into the dictionary, but....
What if I want to sort the parent keys by one of their child keys?
for example, a dictionary with parent keys @"8979", @"6754", @8776", @"9076" and so on have child key / value pairs like:
@"pos", 8
@"pos", 4
@"pos", 10
@"pos", 7
and so on.
I know how to sort the parent keys to be: @"6754", @"8776", @"8979", @"9076"
but how to sort the parent keys based on their respective @"pos" child key resulting in:
@"6754", @"9076", @"8979", @"8776"
???
stevex :
You can simplify this to a single line:\n\nNSArray *sortedArray = [keySort keysSortedByValueUsingComparator: ^(id obj1, id obj2) {\n return [(NSString *)obj1 compare:(NSString *)obj2];\n}];\n",
2011-12-24T04:22:28
highlycaffeinated :
keysSortedByValueUsingSelector: will let you supply a comparator that is passed the values from your dictionary and returns an ordered array of the keys.",
2011-06-24T20:28:56